Subtract 3/21 from 2/10, Solve 2/10

Subtract 3/21 from 2/10

2/10 - 3/21 is 2/35.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
2/10 = 2 × 21/10 × 21 = 42/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210
Subtract the two like fractions:
42/210 - 30/210 = 42 - 30/210 = 12/210
After reducing the fraction, the answer is 2/35

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